/*
 * Copyright [2009] [Marcin Rzeźnicki]

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
 */
package mr.go.sgfilter.vis.app;

import java.util.ResourceBundle;

import javax.swing.JOptionPane;

final class VisAppExceptionHandler implements Thread.UncaughtExceptionHandler {

    private static String getErrorMessage(Throwable e) {
        String result = application.getString(e.getMessage().toUpperCase());
        if (result == null) {
            result = application.getString(e.getClass().getSimpleName().
                    toUpperCase());
            if (result == null) {
                result = application.getString("GENERIC_ERROR");
            }
        }
        return (result + '\n');
    }

    private final Application visAppInstance;

    public VisAppExceptionHandler(
            Class<? extends Application> visAppClass) {
        visAppInstance = org.jdesktop.application.Application.getInstance(
                visAppClass);
    }

    @Override
    public void uncaughtException(Thread t, Throwable e) {
        String message = getErrorMessage(e);
        if (e.getCause() != null && e.getCause().getMessage() != null) {
            message += e.getCause().getMessage();
        }
        JOptionPane.showMessageDialog(
                visAppInstance.getMainFrame(),
                message,
                application.getString("ERROR"),
                JOptionPane.ERROR_MESSAGE);
    }

    private static final ResourceBundle application = ResourceBundle.getBundle(
            "mr/go/sgfilter/vis/app/resources/Application");

}
